Strom



UNITED STATES PATI-NT OFFICE.

CARL JOHAN LUNDSTROM, OF LITTLE FALLS, NEW YORK, ASSIGNOR TO D. H. BURRELL do CO., OF SAME PLACE.

CENTRlFUGAL SEPARA-TOR.

l SPEGIFICATION forming part of Letters .Patent No. 543,213, dated July 23, 1895.

Original application led January 24, 1893, Serial No. 459,533. Divided and this application filed November 23, 1894. Serial No. 530,227. (No model.) Patented in Canada July 6,1393,No .43,500.

To all whom it may concern:

Be it known that I, CARL JOHAN LUND- STROM, a subject of the King of Sweden and Norway, residing at Little Falls, in the county 5 of Herkimer and State of New York, have' invented a new and useful Improvement' in Centrifugal Separators, (for which I have obtained Letters Patent of Canada, No. 43,500,

dated July 6, 1893,) of which the following is 'I5 ties, particularly for separating full milk into cream and skim-milk,

The space in the drum or bowl which is occupied by the liquid is often provided with a division device, which separates the liquid into distinct bodies and which increases the separating capacity of the bowl. In Letters Patent No. 514,156, granted to me February 6, 1894, upon an application tiled January 24, 1893, Serial'No. 459,533, a single hollow sepaz 5 rating-concis shown and described in the liquid space of the bowl for this purpose.

The improvement which forms the subjectmatter of this application has the object to l further increase the separating capacity of this separating device and the closeness of the separation. This improvement formed part of the subject-matter which was disclosed and claimed in said original application for A Letters Patent and was removed therefrom and forms now the subject-matter of this divisional application.`

In the accompanying drawings, Figure 1 is a sectional elevation of the bowl of a centrifugal creamer provided with my improvements.

Fig. 2 is a horizontal section in line Fig.

1. Figs. 3 and 4 show slightly-modied forms of the invention.

Like letters of reference refer to like parts in the several figures.

A represents the stationary cu-rb or surrounding case, which is of ordinary' construction and supported in the usual Way on a suitable frame.

B is the spindle, which is journaled near vcream-wall.

E represents the cover of the bowl, which is removablysecured to the peripheral wall in any usual Way and which tapers rupwardly to a contracted neck E. This cover is provided on its under side with theusual skimmilk discharge-pipes f and in `its contracted neck with the cream-outlet f.

G G represent the superposed receptacles 7o for the separated skim-milk and cream resting upon the curb.

-H represents `the milk-receptacle from which the full milk passes through a discharge-pipe h into a tubular stem or feedv pipe I, arranged axially in the bowl,and thence into the feedcup D. A

The construction of the above-described parts may be varied in many respects, and these parts may be constructed and arranged 8o in any other Well-known or suitable manner.

K represents a hollow separating cone vwhich is arranged in the liquid-space of the bowl .and which rests upon the bottom of the bowl at or near the peripheral wall thereof, and extends obliquely upwardly and inwardly from the bottom toward the cream-outlet and terminates with its contracted end in the vicinity of the cream-outlet.

K K2 represent supplemental concentric 9o separating-cones of similar construction, arranged within the cone K, and successively smaller in size toward the axis of thebowl. The full milk enters the liquid-space within the inner cone K2 and is there subjected to 95 centrifugal action, whereby the cream-globules are crowded toward the axis of rotation while the globules of blue milk or skim-milk cream-outlet by the incoming supply of milk at the bottom of the bowl, while the particles of blue milk reach in their outward course the inner surface of the cone K2 and move l downwardly along the latter under the action of centrifugal force and finally vpass around the lower edge of this cone into the lower portion of the space between the 4cones K2 and K. The cones are constructed of tin or other suitable material and rest loosely on the bottom ofthe bowl, so that the centrifugal force can drive the liquid past'the lower edges of the cones. In the space between the inner cones K2 and K the milk is subjected to a similar separating action, the creamglobules moving inwardly andvupwardly and joining at the upper end of the innermost cone the cream separated in the latter, while the blue milk moves outwardly and downwardly and passes around the lower edge of the cone K into the space between the cones K and K. In this space a similar separation is eeoted, the cream passing inwardly and upwardly and joining the cream separated in the previous separations, while the blue milk escapes past the lower edge of the outer cone K into the space between the latter and the peripheral wall of the bowl, where the final separation is effected. The cream separated in this space passes inwardly and upwardly and joins the cream from the previous separations in passing to the cream-outlet while the skim-milk escapes through the skim-milk pipes. The fullmilk is by this means subjected in an extremely simple manner to several successive separations, wherebyy the cream particles are completely separated from the blue or skim milk.

Each cone is preferably provided on its outer side with several radial blades m mm2,

vwhereby the cones are held apart in their proper position in the bowl and whereby the liquid is prevented from shifting its position circumferentially and is compelled to rotate with the bowl. The innermost cone may also be provided with internal blades n for the last-named purpose.

Whenv it is desired to clean the bowl and cones the cover of the bowl is removed `and the cones are taken out.

The cones may be made of various formsfor instance, with parallel sides and tapering throughout their height, as represented in Fig. l, or` of different taper and upwardly converging, as represented in Fig. 3, or in their lower portions cylindrical, as represented in Fig. 4t. t

I claim as my invention i l. The combination with the separating bowl, having an inlet for the full milk and discharges for the separated cream and skim milk, of an outer separating cone extending diagonally through the liquid space from the bottom of the bowl toward the cream outlet, and a preliminary separating cone of smaller diameter arranged within the outer cone, substantially as set forth.

2. The combination with the separating bowl having an inlet for thel full milk and discharges for the separated cream and skim milk, of hollow separating cones of diierent diameters arranged loosely upon the bottom of the bowl around the inlet for the'full milk and extending diagonally through the liquid space of the bowl toward the cream outlet,

whereby the milk is separated rst within the innermost ccne and then successively in the surrounding spaces, the separated cream CARL JOHAN LUNDSTROM.

Witnesses: HARVEY FELDMEIER, GRIFFITH PRICHARD. 

